Steam-tuyere



(No Model.)

L. G. HEYBROGK.

STEAM TUYBRE.

N07 270,063. Patented Jan 2,1883

- V INVENTOR fimw WW /y BY M ATTORNEYS.

N. FETERS Pholwlilhogmpher. Wahinghm. DIC.

UNITED STATES PATENT OFFICE.

Lewis G. lIEYBROOK, or OMAHA, NEBRASKA.

STEAM-TUYERE.

SPECIFICATION forming part of Letters Patent No. 270,063, dated danuary 2, 1883.

. Application filed August 4,1882. (No model.)

T all whom it may concern:

Be it known that I, LEWIS G. HEYBROCK, of Umaha,in the county of Douglas and State of'Nebraska, have invented a new and Improved Steam-Tuyere, of which the following is afnll, clear, and exact description.

. My invention relates to a tuyere operated by I a steam-jet, for use with smelting and other furnaces, also with boiler-furnaces, for promoting combustion, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure l is a longitudinal section of my improved tuyere. Fig. 2 is an end view of the same.

A is a casting, which should be made heav enough to Withstand the heat, and is formed with a central passage, a, from a chamber, b, at the rear end. In the sides and end of the chamber 1) are openings 0 for the inlet of air.

B is the steam-nozzle, entering at the rear end of the casting A, and projecting therein to near the end of the passage or. The outlet at of the nozzle at its forward end is flared, as shown,in order to spread the jet of steam. A

pipe is to be connected to the outer end of the nozzle B for supplying steam from a suitable generator. The tuye're, when used on a steam boiler, is to be inserted in the side of the firebox above the grate-bars, and high enough so I that the jet of steam and air canstrike a short distance above the coal-bed in a direction parallel with the bridge-wall Theoperation of the tuyere is to injecta mixture of steam and air into the fire, thereby causing more complete combustiomand more intense heat. When used with a forge the tuyere is placed in the same manner as an ordinary tuyere. Iu smelting-furnaces or any furnace intended for heating, smelting, or refining metals the tuyere is to be placed so that the jet shall strike the flame at a point where the greatest heat is required.

I am aware that it is old to produce a blast in steam-blowers and tuyeres for furnaces by ajet of steam and air; also, to make the steam-, nozzle relatively adjustable with respect to the air-opening, so as to regulate the rapidity of combustion in the fire; but

WhatI do claim as new and of m'yinvention 1. A tuyere-casting,A,formed with the central passage, a, the chamber b, the openings 0, and an internal central thread at the rear for receiving a nozzle, as described.

2. In a tuyere, the steam-nozzle B, having an outlet, 61, flared outwardly from the main passage, whereby the jet of steam may be 

